Over-the-Side

Over-the-side heaters are ideal for heating water, oils, solvents, salts and acids. Over-the-side heater application versatility is enhanced with optional sheath materials, kilowatt ratings, terminal enclosures and mounting methods.

The L and O shaped “installed-from-the-top” heaters slide easily into tanks, with the heated portion immersed along the side or at the bottom. The drum immersion heaters are designed for direct immersion in a standard 55 gallon steel drum. Watlow® vertical loop immersion heaters are well-suited for open tank applications.

Specifications:

Material	Maximum Operating Temperatures		Maximum Watt Densities
Material	°F	°C	W/in²	W/cm²
Alloy 800	1600	870	60	9.3
N/A	1400	760	43	6.7
N/A	750	400	23	3.6
N/A	1200	650	60	9.3

Alloy 800 sheath element watt densities to 60 W/in² (9.3 W/cm²)
Wattages to 50 killowatts
Voltages to 600VAC

Applications:

Water heating
Freeze protection
Viscous oils
Storage tanks
Degreasing tanks
Solvents
Salts
Caustic solutions
Paraffin

Features & Benefits:

Features	Benefits
Rugged, light-weight construction	Resists damage during installation or removal
0.475 in. (12 mm) diameter WATROD heating elements	Offers one- or three-phase operation
WATROD hairpins are repressed (recompacted)	Maintains MgO density, dielectric strength, heat transfer and heater life
Four inch (100 mm) sludge legs	Keeps heating elements off the tank’s bottom to help avoid being covered with sediment
RTV riser seal	Prevents moisture from infiltrating electrical areas
Standardized size 1 in. (25 mm) conduit openings	Facilitates wiring
SRG insulated flexible lead wires, rated to 390°F (200°C)	Allows factory or field wiring for three- or one-phase operation
Riser materials are compatible with element sheath materials such as stainless steel with Incoloy® sheath and steel with steel sheath	Meets varying application needs Ensures ease of use